Berengaudus commentary commentary on the Apocalypse written in the ninth century by Berengaudus of Ferrieres, and incorporated in the blockbook Apocalypse texts
bifolium sheet of paper folded in half to form a pair of joined leaves
blind style of decoration of a binding: a plain impression made on a binding using a tool or roll, and without gilding or colour being added
chiro-xylographic a book combining woodcut printed pictures with handwritten (manuscript) text
colophon information given at the end of a book about the printer, place of printing, and date
editio princeps Latin phrase meaning first edition
fillets a binder's tool, used to make a line or parallel lines on the binding; the word can mean either the tool itself or the lines it makes
gouges a brass binder's tool, used to make curved lines on bindings
guards narrow strip of paper onto which a leaf is pasted
offset ink transferred accidentally from a printed page to an adjacent page
Picture-book Apocalypses one type of illustrated Apocalypse, following the English tradtion, and transmitted from medieval manuscripts
ploughed edges of a book trimmed by a knife or primitive guillotine
prototypography "group of fifteenth-century editions, printed in the Netherlands and connected by their typeface, but bearing neither the place of printing, nor the name of the printer, nor the date. They are the earliest Dutch printed books "
quires section of a book, also called a 'gathering'; 'the group of leaves formed after the printed sheet has been folded to the size of the book and before it is combined in proper order with its fellows for binding' (Carter, ABC for Book Collectors, 6th edn, pp. 106, 169)
roll a binder's tool, used to make a repeated design; the word can mean either the tool itself or the design it makes on the binding
Sammelband collection of works, often small pamphlets
signatures The letters … printed in the … margin of the first leaf of each gathering or section of a book, as a guide to the binder in assembling them correctly' (Carter, ABC for Book Collectors, 6th edn, p. 189). In early books the study of early books printed signatures also form a useful means of identifying one's place in a book, given the (usual) absence of page numbers
stub narrow strip of leaf remaining after it has been cut from its counterpart
tacketed a book covering loosely attached to a sewn textblock with strips of parchment or leather thongs; a temporary covering
turn-ins edge of the covering material … folded over and pasted to the inside boards of a binding' (Marks, British Library Guide to Bookbinding, p. 90, illustrated on p. 30, pl. 17)
variant The copy of an edition containing some variation of text, title-page, or illustrations, made during the course of printing and usually resulting from proof reading, from other copies of the same edition
xylographic printed from woodblocks